FR2666306A1 - DEVICE FOR STRENGTHENING METALLIC PACKAGING. - Google Patents

Abstract

Reinforcing device in semi-rigid plastic, intended to fit over the opening and the cover of a metal packaging. According to the invention, the reinforcement device consists essentially of a cap (11) provided with a crown (20) and preferably with braces (21), the crown comprising at least one rib (22). Means are provided for breaking said cap, at least in the aforementioned crown.

Description

"Metal package reinforcement device"

  relates to a metal packaging reinforcement device having a cover fitting into the opening of a can body Such a device is more particularly intended for packaging containing liquid or pasty, dangerous and / or polluting products.

  In a metal packaging of the kind defined above

  above, the sealing of the closure of the lid can be destroyed in case of impact on the edge of said package, usually resulting from a fall Such a shock can cause permanent deformation of the can body and cover and a loss of local sealing Depending on the nature of the product contained in the packaging, an incident of this kind can have serious consequences such as chemical burns, local pollution or corrosion of chemicals.

  adjacent metal appliances or packaging.

  The invention is aimed primarily at reinforcing such a metal package without making any structural modification to the latter, in particular without increasing the thickness of the metal or changing the conformation of the body.

box and lid.

  For this purpose, the invention therefore relates to a metal packaging reinforcing device comprising a box body and a cover fitted into an opening of said box body, characterized in that it consists essentially of a plastic cap having a less latching means capable of cooperating with an outer rib of the edge of said opening and means for breaking said cap, at least substantially

  transversely in a peripheral ring thereof.

  Preferably, the central portion of the cap is constituted by braces extending between its center and said crown The latter is open at its lower part and ribbed internally to define said

latching means.

  The invention will be better understood and other advantages thereof will appear more clearly in the light of the

  following description of several embodiments

  reinforcement device according to its principle, given solely by way of example and with reference to the accompanying drawings, in which: FIG. 1 is a bottom view of a first embodiment of a reinforcing device according to FIG. 'invention; Figure 2 is a partial top view of the same device; Figure 3 is a section III-III of Figure 1, shown on a larger scale and also illustrating the profile of the metal package of its lid; Figure 4 is a top view of another embodiment of a metal packaging reinforcement device according to the invention; Figure 5 is a partial side view, on a larger scale, according to the arrow V of Figure 4; Figure 6 is a section VI-VI of Figure 5; Figure 7 is a section VII-VII of Figure 5; Figure 8 is a top view of a third embodiment of a reinforcing device according to the invention; Figure 9 is a bottom view of the same device; Figure 10 is a partial side view along the arrow X of Figure 8; and FIG. 11 is a section XI-XI of FIG.

  represented on a larger scale.

  Referring to FIGS. 1 to 3, there is shown a package reinforcement device consisting of

  essentially in a cap 11 made of semi-synthetic plastic

  rigid, likely to take place, by snapping

  at the top of the package 12, that is to say

  above the opening 13 and the lid 14 of this package.

  In the example, the opening edge has an outer rib 15 formed by the crimping of a ring

  opening 16, classic, with the edge of the box body.

  The cover 14 comes to fit on this ring In the example, the package is generally cylindrical or very slightly frustoconical, and therefore the opening 13 and the cover 14 are circular in outline. invention relates to all form variants which have the consequence of adapting its principle to

other types of boxes.

  The cap 11 here comprises a peripheral ring and its central portion is formed by braces 21, extending here radially between its center and said crown. Of course, the invention covers any other embodiment comprising the crown and a solid web. the place of the braces The crown 20 is open on the side provided for the interlocking and is ribbed internally and circumferentially to define snap-fastening means capable of cooperating with the outer rib 15 for the establishment of the cap In the example the simplest of Figures 1 to 3, it is a simple circumferential rib 22, integrally molded with the inner face of a side skirt 24, here substantially cylindrical, of the crown In this way, the rib 22 defines with the inner faces of said ring, a peripheral groove 25 shaped to accommodate a rib

  crimping a metal package defined above.

  In addition, such a reinforcing device comprises means for severing the cap 11 substantially transversely at least at the level of the ring 20. In the embodiments of FIGS. 1 to 3, these means consist of two transverse impressions 26, 28 made in FIG. said ring 11 and a tearing element 30, here a kind of ring, integrally molded with a portion 32 of the ring 11 delimited by such fingerprints It is clear that by pulling on the tearing element This allows, by taking advantage of the relative elasticity of the latter, to clear the set of

  the cap, before the first opening of the package.

  In addition, in the embodiment of FIGS. 1 to 3, the inner face of the flat annular wall 33 of the crown carries three small hooks 34 integrally molded for securing a lid. and closing the packages, to assemble the lid and the

  before presenting the set to the closing station.

  In the embodiment of FIGS. 4 to 7, more particularly designed for containers of relatively large capacity, for example of the order of 4 to 5 liters, the groove 25a of the crown 20a is more precisely delimited by two ribs. A first rib 22a extends over substantially the entire periphery of the inner face of the side skirt 24a of the ring (similar to the rib 22 of the embodiment of FIGS. 1 and 2) while a second rib 38 projects from an annular surface 39 of the ring, substantially parallel to said skirt. Thanks to these two ribs, the peripheral groove intended to receive the crimping rib is more precisely delimited and the cap, in particular the The rigidity is increased by the fact that the crown has, externally, stiffening cells 42 adjacent and extending over its entire periphery. n addition, a third peripheral rib 44 projects from the inner face of the annular surface 39, substantially parallel to the skirt and at a distance

  radial weaker than said second peripheral rib.

  This rib 44 is shaped, positioned and sized

  to engage in a groove 45 of the lid.

  The central part of the cap consists of braces 21a extending here radially between its center

and said ring.

  In this embodiment, the means for breaking the cap are arranged to, at first, break the cap transversely by individualizing a tear-off element in said lateral skirt then, in a second step, cut the lateral skirt in the direction circumferential to release the outer rib of the metal package, that is to say here the crimping rib 15a More precisely, the side skirt 24a of the crown is provided with two grooves 61, 62 rectilinear, parallel and spaced apart , extending parallel to the axial direction of the crown The groove 61 extends over the entire height of the skirt while the groove 62 extends over only the "upper" part thereof. Furthermore, between these two grooves, is defined a cavity 64 obliquely crossing the wall of the skirt and through which it is possible to introduce a tool such as a screwdriver, to break the side skirt along the two bleeding In addition, small cells 65 extend circumferentially in the thickness of the skirt, defining a circular cutting contour at the lower end of the groove 62. The rib 22a is interrupted between the two grooves. screwdriver engaged in the cavity 64 as a lever, it causes the breaking of the two grooves, which transforms the portion of the skirt which extends between it in a pull tab 30 a Pulling on this tab, it causes the circumferential cutting of the skirt, along the cells 65, which separates the ribs 22a and 38 and thus destroys the groove 25a, thereby separating the metal package

of its reinforcement device.

  The embodiment of FIGS. 8 to 11 is more particularly intended for metal packages 12b whose opening edge has a special outer roll defined in the box body itself. This type of roll, known per se, is adapted to receive 14 b This package therefore does not include a crimped opening ring but nevertheless has an outer rib 15 b (in this case the outer roll mentioned above, completed by the edge of the lid) used for mounting the cap IIb This latter is composed as before of a peripheral ring 20b and braces 21b The ring 20b is open and provided with a side skirt 24b, here substantially cylindrical The ring has openings 50 extending essentially on part of the height of the lateral skirt 24b and, radially, on a small part of its upper wall The "lower" part 52 of the skirt, that is to say extending axially beyond the openings 50, is continuous and carries teeth 54 Each tooth, forming part of the latching means, is inclined towards the inside of a corresponding window, in the direction of the upper part of the cap As in the other embodiments, the inner face of the skirt is provided with a peripheral rib 22b but it is segmented by the presence of the openings 50 All these structural elements therefore delimit a peripheral groove 25 b The inner face of the ring also carries a peripheral rib 44b protruding substantially parallel to the side skirt 24b This rib is increased by a plurality of small segments 58 extending substantially radially Such a rib is positioned, shaped and dimensioned to engage in a groove 45 b of the cover The profile of the segments is more

  particularly adapted to that of such a groove.

  In this embodiment, the tear-off element 30 has the shape of a sort of "ring", with approximately triangular contour, attached to a portion 32b of the ring 11b delimited by two transverse impressions 26b, 28 b On the upper face of the ring, circumferentially extending segments 59 extend the stackability of packages equipped with their reinforcing devices.

Claims (9)

  1 metal package reinforcing device comprising a box body and a cover fitted into an opening of said box body, characterized in that it consists essentially of a plastic cap (11) comprising at least snap-fastening means (22) capable of cooperating with an outer rib (15) of the edge of said opening and means for breaking said cap (30, 32), at least substantially transversely in   a peripheral ring (20) thereof.   2 reinforcement device according to claim 1, characterized in that said ring (20) is open, and at least internally ribbed to define said latching means. 3 reinforcement device according to claim 2, characterized in that the central part of the cap is constituted by braces (21) extending between its center and said ring (20).   4 Reinforcement device according to one of   Claims 1 to 3, characterized in that the means for   breaking said crown comprise transverse impressions (26, 28) formed in said crown and a tearing element (30) integrally molded with a portion   (32) of said crown delimited by such fingerprints.   Reinforcement device according to one of   preceding claims, for a package in which a   opening ring is assembled to the box body by crimping, characterized in that said detent means are shaped to present a groove   peripheral (25) capable of accommodating said crimping.   Reinforcement device according to claim 1, characterized in that this groove is at least partly delimited by a first peripheral rib (22) extending on the internal face of a lateral skirt (24> of a   crown of said peripheral zone.   7 Device according to claim 6, characterized in that said groove is partly defined by a second peripheral rib (38) projecting from the inner face of an annular surface of said ring, substantially parallel to said skirt (24 a). 8 Reinforcement device according to one of   Claims 2 to 7, characterized in that said crown   has adjacent stiffening cells (42) and extending all around.   9 Device according to one of claims 1 to 8,   characterized in that said lateral skirt (24a) is provided with two grooves (61, 62> delimiting a tear-off tab (30a) and in that it further comprises cavities (65) extending circumferentially.   10 stiffening device according to one of   Claims 2 to 4, characterized in that said crown   has apertures (50) extending substantially over part of the height of an outer side skirt (24b) thereof and in that a continuous portion of said skirt has teeth (54) inclined towards the interior of said windows, respectively, these teeth being part of latching means mentioned above.   11 Apparatus according to claim 10, characterized in that the inner face of said side skirt comprises a peripheral rib (22b) segmented by said openings.   Device according to one of Claims 6 to 11,   characterized in that said ring further comprises a peripheral rib (44) projecting from the inner face of an annular surface of said ring, substantially parallel to said skirt and in that said rib is shaped and dimensioned to engage in a throat (45) said lid.